Wednesday, November 26, 2014
YOLO COUNTY NEWS
99 CENTS

Consider a circulating hot water pump

By
From page D2 | April 11, 2014 |

By Bill Cavins

Are you wasting good, treated water while you wait for your shower to get hot? Do you have to run water in the kitchen to get hot water to the dishwasher? Are you committed to water conservation? Did you know that every home wastes thousands of gallons of water a year waiting for it to get hot?

Demand hot water circulation systems are not new. They have been around for a long time, but with our current water shortage, they could be a great contributor to water conservation.

The concept is this: At the push of a button, water is pumped from the hot water line back into the cold water line at the water fixture furthest from the water heater, usually a bathroom. A temperature-sensor detects an increase in the water temperature as hot water arrives and shuts the pump off. Meaning, while you are getting ready for your shower, no water is wasted. The pump runs for less than a minute, and hot water is immediately available wherever the pump is installed, usually at the bathroom sink.

Whether or not hot water is then available at other locations in your house depends on the plumbing layout. Ideally if there is only one main hot water line with small branches to the kitchen, bathrooms and laundry, installing the pump at the end of the line should provide hot water within seconds anywhere in the house. (Remote buttons can be placed at other locations.) If the farthest point is at the end of one branch — for example, the master bath, with the kitchen at the end of another branch — this will affect the time it takes for hot water to reach the kitchen. A second pump would be required.

For tankless water heaters, the pump must have a high enough flow rate to activate the water heater, 10 gallons/minute is recommended. For pipe runs of more than 100 feet, a bigger pump is required, such as 20 gallons/minute.

These demand systems are simple to install —  hardware kits are available. However, they do require an electrical outlet. In the case of a bathroom sink, on outlet can usually be added by extending wiring from an existing outlet by the sink. This is the only part of the installation that requires trade skills, as well as a permit.

The “button” is actually a doorbell button and is low voltage. An optional remote receiver hooks right up to the unit so it can be turned on from anywhere in the house with a remote transmitter button.

There are a variety of choices in demand hot water systems, including companies such as ACT, Watts and Grundfos. Costs are in the $200 to $300 range.

— Bill Cavins is from Ganesh Works in Davis.

Comments

comments

Special to The Enterprise

  • Recent Posts

  • Enter your email address to subscribe to this newspaper and receive notifications of new articles by email.

  • .

    News

    Food fight … in a good way

    By Tanya Perez | From Page: A1 | Gallery

     
    Fremont Weir parking lot remains closed

    By Elizabeth Case | From Page: A1

    Happy Thanksgiving from The Enterprise

    By Enterprise staff | From Page: A3

     
    Free bike clinic, ride set Sunday

    By Enterprise staff | From Page: A3

     
    Year-end films to see, or not, on KDRT

    By Enterprise staff | From Page: A3 | Gallery

    LCI marks 50 years with special service

    By Enterprise staff | From Page: A3

     
    Pedal around Davis on weekly bike ride

    By Enterprise staff | From Page: A3

    Speaker proposes changes in humanities doctorate

    By Special to The Enterprise | From Page: A4 | Gallery

     
    Senior Center hosts holiday sing-along

    By Enterprise staff | From Page: A4

    Sutter sponsors qigong for holiday de-stress

    By Enterprise staff | From Page: A4

     
    Learn to use Skype at Connections Café

    By Enterprise staff | From Page: A4

    Girls who volunteer may apply for grant

    By Enterprise staff | From Page: A4

     
    Round up at the registers for Davis schools

    By Enterprise staff | From Page: A4

    Davis Community Gift Project brightens holidays for children

    By Anne Ternus-Bellamy | From Page: A4

     
    Boy Scouts start Christmas tree sales on Friday

    By Enterprise staff | From Page: A5

    Volunteers needed to grow plants for habitat restoration

    By Special to The Enterprise | From Page: A5 | Gallery

     
    Rainbow City community meeting set Dec. 1

    By Special to The Enterprise | From Page: A12

    .

    Forum

    She wants more from him

    By Creators Syndicate | From Page: B5

     
    Planting love at new home

    By Letters to the Editor | From Page: A6

    Innovation parks comparison

    By Letters to the Editor | From Page: A6

     
    Tom Meyer cartoon

    By Debbie Davis | From Page: A6

    Musings in the wake of Ferguson decision

    By Special to The Enterprise | From Page: A6

     
    .

    Sports

    Let’s not lose another good DHS coach

    By Chris Saur | From Page: B1

     
    Blue Devils prepare for a new season on the mat

    By Evan Ream | From Page: B1 | Gallery

    No excuses, but there’s hope for UCD after 2-9 season

    By Bruce Gallaudet | From Page: B1

     
    Joseph, Manzanares lead 10 All-Big Sky Aggie picks

    By Bruce Gallaudet | From Page: B1 | Gallery

    DHS wrestling is not just for boys

    By Evan Ream | From Page: B1 | Gallery

     
    Davis Little League offers early sign-up discounts

    By Enterprise staff | From Page: B2

     
    Kings get past Pelicans

    By The Associated Press | From Page: B6

    .

    Features

    Salute to non-steamed broccoli

    By Dan Kennedy | From Page: A7 | Gallery

     
    .

    Arts

    It really is ‘The Best Christmas Pageant Ever’

    By Debra DeAngelo | From Page: A11 | Gallery

     
    .

    Business

    .

    Obituaries

    Elzyne Thompson

    By Special to The Enterprise | From Page: A4

     
    Death notice: Buddy Ralph Mills

    By Special to The Enterprise | From Page: A4

    .

    Comics

    Comics: Wednesday, November 26, 2014

    By Creator | From Page: A9

     
    .

    Ready, Set, Shop!

    Shop locally: You can have your pie and eat it too

    By Enterprise staff | From Page: RSS1

    Santa’s little helper: secrets to happy holiday shopping

    By San Francisco Chronicle | From Page: RSS2

    Make sure it gets there: deadlines for shopping and shipping

    By The Associated Press | From Page: RSS2

    Downtown lights up at holiday open house

    By Enterprise staff | From Page: RSS3

    Full of warm wishes and over-sharing, the holiday card lives on

    By The Associated Press | From Page: RSS4

    Shop smart: Protect your wallet and your identity this shopping season

    By Special to The Enterprise | From Page: RSS5

    Woodland celebrates the holidays downtown

    By Special to The Enterprise | From Page: RSS5